Fan Casting Woola in Jon Favreau's John Carter of Mars

Woola is a calot—a six-foot, ten-legged Martian creature resembling an ugly-cute bulldog with tusks, making this unlikely companion into one of the film's most beloved characters. Woola's signature "woola-woola-woola" purr conveys everything from joy to grief, loyalty to fear. He is Carter's first true friend on Mars, surviving a radium bolt to save his master and providing moments of levity amidst the chaos. Woola feels not like a pet, but a partner.